CN105669175A - High-frequency low-loss soft magnetic ferrite material - Google Patents
High-frequency low-loss soft magnetic ferrite material Download PDFInfo
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Abstract
The invention discloses a high-frequency low-loss soft magnetic ferrite material which includes a main component and additives. The main component includes Fe2O3, MnO and ZnO. By adjusting the molar ratio of the main component in the ferrite material with addition of certain additives, the magnetic ferrite material adapts the development tendency towards high frequency in the electronic industry. Compared with the main model ferrite materials, such as MP4A, MP4B and MP4C, a magnetic core, which is prepared with the magnetic ferrite material, is improved greatly in various properties, and is lower in loss and longer in service life under a high frequency environment.
Description
Technical field
The present invention relates to technical field of magnetic materials, in particular it relates to a kind of high frequency low loss soft magnetic ferrite material.
Background technology
Soft magnetic ferrite is with Fe2O3For main constituent, it is used for preparing that there is the ferritic material of soft magnetic characteristic, is mainly characterized in that easy magnetization, also easily demagnetizes. Soft magnetic ferrite is the basic material that a kind of purposes is wide, yield is big, cost is low, it it is one of important pillar product of electronics, mechanotronics, its popularization and application directly influence the development of electronic information, household electrical appliances industry, computer and communication, environmental protection and power-saving technology, are also one of marks weighing a national economy development degree. Soft magnetic ferrite has the wearability of high magnetic permeability, high resistivity, low-loss, good high frequency characteristics and pottery, thus is used widely in the fields such as the new forms of energy such as green illumination, solar energy and wind energy, automotive electronics, Internet of Things such as the electron beam deflection coils of television set, kickback transformer, radio choke coil, middle all transformator, inducer, Switching Power Supply, communication apparatus, wave filter, computer, electric ballast, LED; Along with popularizing that the application that electronic technology is increasingly extensive, particularly digital circuit and Switching Power Supply are applied, electromagnetic interference (EMI) problem becomes more and more important, and the standard that electronic machine and measurement device electromagnetism interference performance are proposed by countries in the world is more and more higher. Therefore, EMI magnetics based on soft magnetic ferrite quickly grows, product category is various, and such as electromagnetic interference eliminator, electric wave absorbing materials, doubler, manipulator etc., oneself becomes modern military electronic equipment, industry and the indispensable ingredient of civil electronic instrument.
CN102194561A discloses a kind of soft magnetic ferrite and preparation method thereof, CN1627454A discloses a kind of soft-magnetic manganese-zinc ferrite in low wastage, CN102942356B discloses a kind of soft magnetic ferrite, and three above-mentioned patents are all to ferrum oxide (Fe2O3), the restriction of the mol ratio of manganese oxide (MnO) and zinc oxide (ZnO) and various conventional additives deal. My company show that in productive experiment some can effectively promote adaptation high frequency environment, and the loss that is in operation relatively low additive formula.
Before my company, the product of main MP4A, MP4B and MP4C trade mark of Ferrite Material in application, is also the main product of Ferrite Material in the market, and the formula composition of its each trade mark product is as follows with composition content:
The formula composition of MP4A Ferrite Material with composition content is:
The formula composition of MP4B Ferrite Material with composition content is:
The formula composition of MP4C Ferrite Material with composition content is:
The performance of described MP4A, MP4B and MP4C and loss test result are as shown in table 1, and test condition is 500Kc/50mT environment.
The performance of table 1:MP4A, MP4B and MP4C and loss test table
The trend developed to high frequency direction along with electron trade is increasingly faster, thus the high frequency of magnetic material is also important development direction in the future. Its characteristic features is realize the low-loss of magnetic core in high frequency. The general requirement to material is: core loss should be less than 130mW/cm under the test condition of 500kc, 50mT and 100 DEG C3. And initial permeability is about 1600, and through test, institute's commonly used material cannot realize the target of high-frequency low-consumption when high frequency at present as shown in Table 1, therefore need to research and develop a kind of novel high frequency low loss soft magnetic ferrite material, to adapt to the needs of market development.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the present invention provides a kind of high frequency low loss soft magnetic ferrite material, adds several additives in conventional ferrite material material formula, to reach the effect that under high frequency environment, low-loss runs. This high frequency low loss soft magnetic ferrite material designation is MP1K4 material by our company, if therefore this specification hereinafter mentions MP1K4 material, unified be considered as one high frequency low loss soft magnetic ferrite material of the present invention.
Technical scheme: in order to realize foregoing invention purpose, the technical solution adopted in the present invention is as follows: a kind of high frequency low loss soft magnetic ferrite material, described Ferrite Material includes main constituent and additive, and described main composition includes ferrum oxide (Fe2O3), manganese oxide (MnO) and zinc oxide (ZnO).
Wherein, main constituent includes according to molar percentage:
52.8～54.3mol% ferrum oxide (Fe2O3)
38.9～40.8mol% manganese oxide (MnO)
5.5～7.2mol% zinc oxide (ZnO);
Described additive is silicon oxide (SiO2), calcium carbonate (CaCO3), niobium pentaoxide (Nb2O5), Cobalto-cobaltic oxide (Co3O4), vanadic anhydride (V2O5), nickel protoxide (NiO), lithium carbonate (Li2CO3), zirconium dioxide (ZrO2), titanium dioxide (TiO2), phosphorus pentoxide (P2O5) and bismuth oxide (Bi2O3), the weight percent meter each accounting for described high frequency low loss soft magnetic ferrite material includes:
Wherein, Cobalto-cobaltic oxide (Co3O4), nickel protoxide (NiO), lithium carbonate (Li2CO3), titanium dioxide (TiO2), phosphorus pentoxide (P2O5), bismuth oxide (Bi2O3) as optional additive, so its value range is from 0 to certain numerical value.
Described Fe2O3Content can be 52.8mol%, 52.9mol%, 53mol%, 53.1mol%, 53.2mol%, 53.3mol%, 53.4mol%, 53.5mol%, 53.6mol%, 53.7mol%, 53.8mol%, 53.9mol%, 54mol%, 54.1mol%, 54.2mol%, 54.3mol%.
The content of described MnO can be 38.9mol%, 39mol%, 39.1mol%, 39.2mol%, 39.3mol%, 39.4mol%, 39.5mol%, 39.6mol%, 39.7mol%, 39.8mol%, 39.9mol%, 40mol%, 40.1mol%, 40.2mol%, 40.3mol%, 40.4mol%, 40.5mol%, 40.6mol%, 40.7mol%, 40.8mol%, 40.9mol%.
The content of described ZnO can be 5.5mol%, 5.6mol%, 5.7mol%, 5.8mol%, 5.9mol%, 6mol%, 6.1mol%, 6.2mol%, 6.3mol%, 6.4mol%, 6.5mol%, 6.6mol%, 6.7mol%, 6.8mol%, 6.9mol%, 7.0mol%, 7.1mol%, 7.2mol%.
Described silicon oxide (SiO2) content can be 50ppm, 51ppm, 60ppm, 62ppm, 64ppm, 67ppm, 73ppm, 77ppm, 80ppm, 82ppm, 85ppm, 86ppm, 90ppm, 97ppm, 100ppm etc.
Described calcium carbonate (CaCO3) content can be: 400ppm, 410ppm, 442ppm, 450ppm, 480ppm, 500ppm, 523ppm, 530ppm, 580ppm, 587ppm, 600ppm, 635ppm, 650ppm, 700ppm, 760ppm, 800ppm, etc.
Described niobium pentaoxide (Nb2O5) content can be: 200ppm, 210ppm, 220ppm, 230ppm, 300ppm, 350ppm, 370ppm, 400ppm, 410ppm, 450ppm, 475ppm, 481ppm, 490ppm, 500ppm etc.
Described Cobalto-cobaltic oxide (Co3O4) content can be: 0ppm, 80ppm, 100ppm, 150ppm, 200ppm, 300ppm, 400ppm, 450ppm, 500ppm, 600ppm, 700ppm, 800ppm, 900ppm, 1000ppm etc.
Described vanadic anhydride (V2O5) content can be: 100ppm, 150ppm, 200ppm, 250ppm, 300ppm, 370ppm, 390ppm, 450ppm, 470ppm, 490ppm, 500ppm, 530ppm, 580ppm, 600ppm etc.
Lithium carbonate (Li2CO3) content can be: 0ppm, 100ppm, 140ppm, 210ppm, 250ppm, 320ppm, 370ppm, 390ppm, 420ppm, 440ppm, 480ppm, 500ppm, 520ppm, 590ppm, 600ppm etc.
Zirconium dioxide (ZrO2) content can be: 150ppm, 200ppm, 250ppm, 300ppm, 370ppm, 390ppm, 450ppm, 470ppm, 490ppm, 500ppm, 530ppm, 580ppm, 600ppm etc.
Described titanium dioxide (TiO2) content can be: the arbitrary value in 0ppm～4500ppm, therefore will not enumerate.
The content of described nickel protoxide (NiO) can be: the arbitrary value in 0ppm～3000ppm, therefore will not enumerate.
Described phosphorus pentoxide (P2O5) content can be: the arbitrary value in 0ppm～400ppm, therefore will not enumerate.
Described bismuth oxide (Bi2O3) content can be: the arbitrary value in 0ppm～500ppm, therefore will not enumerate.
First the formula composition material bought is carried out physicochemical characteristics detection and analyzes by the present invention, confirm qualified after, arrange by corresponding recipe ratio and composition material is mixed, after vibration, rolling sheet, shaping, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating, prepared by the powder body completing MP1K4 soft magnetic ferrite. Powder body preparation process needs being mutually matched property and the pre-burning operation in addition priority control of the purity to various raw materials and activity, analyzes by the pressure testing of powder body and examination being burnt and sinter being carried out detection, complete the judgement that whether qualified the performance to material is.
An object of the present invention also resides in the purposes providing a kind of high frequency low loss soft magnetic ferrite material. Described soft magnetic ferrite can be used for preparing FERRITE CORE.
Namely preparation FERRITE CORE uses qualified MP1K4 material to carry out the manufacture of corresponding FERRITE CORE, and the technical process that magnetic core manufactures is as follows: powder body damping, molding, sintering, grinding, cleaning, point survey, packaging. Wherein unconventional fine and close low-temperature sintering method is adopted to carry out in sintering circuit. One of ordinary skill in the art may be used without other method and use a kind of high frequency low loss soft magnetic ferrite material of the present invention to manufacture FERRITE CORE.
In the present invention, described main constituent (i.e. Fe2O3, MnO and ZnO) in the molar percentage of every kind of component be the percentage ratio that every kind of component in them accounts for main constituent integral molar quantity, for instance Fe2O3Amount be 52.8mol%, refer to Fe2O3The percentage ratio of mole each component integral molar quantity of accounting for main constituent be 52.8%.
The measurement unit of additive of the present invention is ppm, and namely Solute mass accounts for the part per million of complete soln quality, and also referred to as ppm, its reduction formula is 1ppm=0.001 ‰.
Beneficial effect: compared with prior art, it provides the benefit that the present invention:
The present invention is by adjusting the molar ratio of the main composition of Ferrite Material, and adds certain additive, adapts to the trend that electron trade develops to high frequency direction. Compared with MP4A, MP4B, MP4C main flow trade mark Ferrite Material popular on the market, magnetic core properties prepared by material provided by the invention has all had and has significantly promoted, under high frequency environment magnetic core use in loss lower, service life is also longer.
Detailed description of the invention
Below in conjunction with specific embodiment, the technical program is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1
The present embodiment by each raw material being mixed according to material prescription, vibration, roll sheet, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating after generate high frequency low loss soft magnetic ferrite material composed of the following components:
Above-mentioned granule powder is pressed into standard rings (T25/15/10), passes through in trial furnace, after adopting specific sintering atmosphere to be sintered, standard rings is carried out the test of initial permeability and core loss, test condition is initial permeability: 10kc, 0.3V, 25 ± 2 DEG C; Core loss test condition is shown in Table 2.
Embodiment 2
The present embodiment by each raw material being mixed according to material prescription, vibration, roll sheet, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating after generate high frequency low loss soft magnetic ferrite material composed of the following components:
Above-mentioned granule powder is pressed into standard rings (T25/15/10), passes through in trial furnace, after adopting specific sintering atmosphere to be sintered, standard rings is carried out the test of initial permeability and core loss, test condition is initial permeability: 10kc, 0.3V, 25 ± 2 DEG C; Core loss test condition is shown in Table 2.
Embodiment 3
The present embodiment by each raw material being mixed according to material prescription, vibration, roll sheet, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating after generate high frequency low loss soft magnetic ferrite material composed of the following components:
Above-mentioned granule powder is pressed into standard rings (T25/15/10), passes through in trial furnace, after adopting specific sintering atmosphere to be sintered, standard rings is carried out the test of initial permeability and core loss, test condition is initial permeability: 10kc, 0.3V, 25 ± 2 DEG C; Core loss test condition is shown in Table 2.
Embodiment 4
The present embodiment by each raw material being mixed according to material prescription, vibration, roll sheet, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating after generate high frequency low loss soft magnetic ferrite material composed of the following components:
Above-mentioned granule powder is pressed into standard rings (T25/15/10), passes through in trial furnace, after adopting specific sintering atmosphere to be sintered, standard rings is carried out the test of initial permeability and core loss, test condition is initial permeability: 10kc, 0.3V, 25 ± 2 DEG C; Core loss test condition is shown in Table 2.
Embodiment 5
The present embodiment by each raw material being mixed according to material prescription, vibration, roll sheet, pre-burning, coarse pulverization, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating after generate high frequency low loss soft magnetic ferrite material composed of the following components:
Above-mentioned granule powder is pressed into standard rings (T25/15/10), passes through in trial furnace, after adopting specific sintering atmosphere to be sintered, standard rings is carried out the test of initial permeability and core loss, test condition is initial permeability: 10kc, 0.3V, 25 ± 2 DEG C;Core loss test condition is shown in Table 2.
The test number that above-described embodiment 1-5 obtains is sufficiently close to, and is weighted calculating average, obtains the performance data of unified MP1K4 material, with the result that magnetic core test and comparison made by reference examples material in Table 2.
Table 2: magnetic core performance synopsis made by embodiment and reference examples material
The reference examples adopted in above-mentioned synopsis: MP4AMP4BMP4C is my company at present at the mainstay material trade mark produced, and its component formula is shown in related content in background technology.
As shown in Table 2, a kind of high frequency low loss soft magnetic ferrite material of the present invention, compared with reference examples, all has less core loss on the temperature spot of 25 DEG C, 80 DEG C and 100 DEG C.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a high frequency low loss soft magnetic ferrite material, composed of the following components:
2. a high frequency low loss soft magnetic ferrite material, composed of the following components:
3. a high frequency low loss soft magnetic ferrite material, composed of the following components:
4. a high frequency low loss soft magnetic ferrite material, composed of the following components:
5. a high frequency low loss soft magnetic ferrite material, composed of the following components:
6. the purposes of a kind of high frequency low loss soft magnetic ferrite material of any one according to claim 1-5, it is characterised in that: described high frequency low loss soft magnetic ferrite material is used for preparing FERRITE CORE.
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| CN106278228A (en) * | 2016-08-16 | 2017-01-04 | 绵阳开元磁性材料有限公司 | Magnetic manganese-zinc ferrite of broad temperature, broadband and preparation method thereof |
| CN106810233A (en) * | 2017-01-19 | 2017-06-09 | 东莞易力禾电子有限公司 | High frequency low-loss manganese zine ferrite and its manufacture method |
| CN107216138A (en) * | 2017-04-28 | 2017-09-29 | 苏州冠达磁业有限公司 | Electromagnetic induction wireless charging manganese-zinc ferrite magnetic sheet and preparation method thereof |
| CN112592170A (en) * | 2020-12-17 | 2021-04-02 | 上海宝钢磁业有限公司 | Manganese-zinc ferrite material and preparation method and application thereof |
| CN114284023A (en) * | 2021-12-21 | 2022-04-05 | 江苏佰迪凯磁性材料有限公司 | BP52 soft magnetic material with high frequency, low loss and high Bs and preparation method thereof |
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| CN114284023A (en) * | 2021-12-21 | 2022-04-05 | 江苏佰迪凯磁性材料有限公司 | BP52 soft magnetic material with high frequency, low loss and high Bs and preparation method thereof |
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